Cement mixer for cementing oil and gas wells



Nov. 11, 1930. J. E. TROU'TH 1,781,255

CEMENT'MIXER FOR CEMEHTING OIL A'NDGAS WELLS Filed April 24, 1929 f INVE 0R W e@ M ATTO v Patented Net. 11, 1930 admi n. T aoufrnjor snr/rancia,

KLAHOMA, ASSIGNOR TO INDEENDENT .OIL WELL cnivimivriie co.'J rnc.,` or OKLAHOMA CITY, OKLAHOMA e v v CEMENT MIXER rony CEMENTING o'IL AND GAS WnLLs Y Application-'med Aprll'24, 1929. Serial No, 357,675.'`

My'invention vrelates to cement mixers for `mixing cement'for cementing oil and 'gas wells. I

Y The objects of VnViy-inventionr are to prf duce 5. a-device-.of this'class which will be new, novel, practical and of utility; `which will, automatically control the feeding ofthe dry cement thereinto; which.- will mixl cement .and water to the same desired consistency at all 1o times after it has once been properly adjusted; which willbeeconomical in operation; which will be `cheaply constructed; which will be durable; which will thoroughly mix the cement and water; which willfbe eiiicient in accomplishing all of the purposes for which it is intended.

There is a mixer recently vbecoming ofV general use for mixing lcement for vcementinggg oil and gas wells. This mixer uses as its mixing agent a powerful stream of water. There is no means provided for controlling the feeding of the dry cement and for this reason it requires an attendantto do the feeding by hand. This results in a mixture' which is not uniform at all times.

There are various othermethodsV of mix- Ving cement and water for this purpose `but to my knowledge Vthere are none being used which automatically control the -amount of cement used.

My invention'overcomes the impracticabilities of the present -methods aswell as e'm bodying newand novel features of itsfown.

With these and other objects -in view asv will more fully appear my invention consistsl in the construction, novelV features, and combination of parts hereinafter more fully described, pointed out in the claims hereto appended, and illustrated in thev accompanying 4.0 one-sheet drawing, of which, i

Figure 1 is an elevationalv View showing the mixer'in section with relation to the cement pan; Fig. 2 is a top view of thefunnel ofv the mixer.

Like characters of reference designate like parts in all the figures.

It is understood that various changes in the form, proportion, size, shape, weight and other details of construction, within the scope e v5O of my'invention may be resorted to without departing from the spirit or broad principle of my invention. and without sacrificingrany ofthe advantages thereof; .and itis also-ung derstoord that the drawings are to. be interf `preted as*` lbeing."illustrative and not yrestrictive.

`A practical .embodiment-offthe I invent'ionas illustrated inthe drawings includes: f

A hollow cylindrical .metal drum 1 with flat annular-.top 2 and flat-'bottom 3. YSaid drum 1 is rigidly mountedV upon Channel .irons vt-and 5 :or any desirable .base which will provide space .beneath saiddruinfor L l the geared'drive which is more fully .described below. I provide a funnel vshaped bin .6

upon and ,extending'above the central .por-

. tion of said :top 2.V Said ,bin has its neck portion?? extendin `doivvnward-throughsaid v Ytop .2 .into .the interi-or `of said drum 1.*V ,Said bin 6 kis, rigidly. attached uponsaidrtop2 by an annular shaped vangleiron 8 or byany 7 desired.orknown means. Acrosssaid funnel 6 adjacent its top portion is provided fscreen .32 forscreeningl the Ydry cementbeforel its use inthe mixer.Extending through one extending .neck .7, l pro-vide water .supply liner 9. Sai-d line :9 is Lclosed -at `its free Lend and is4 provided along yits bottom side. with a side ofsaid rdrum lat Va point. adjacent the e top thereof, and with `its inward extending end reaching arpoint adjacent saidldownwardA line .9V is positioned a flanged collar'vlOv or by other suitable means. Said drum 1 is vfurther provided .at .the .upper portion .of the side thereof opposite from the side through which saidwater line 9 is positioned, with discharge pipe .21 which Yleads ,to and dis- 'charges into, a cement Ypan 22. l.'lhroughthe central portion of said bottom 3 and in axial alinement withthe -centerof the, orifice of said neck 7 is "perforation 11. 'Surrounding said perforation 11 is an upward extending flange 12. Y

, VI'provide perpendicular shaft 13 extending .upward through said perforation -11 .and

`through .the interior of said.(vlrunf'l*` 1 `and through said neck7toanyfdesired 'point .withinsaid funnel 6. .Saidshaft 13 Lisy oper- 4offrapidly Within said drum 1.' v Thecent rifugal fforce ofthe revolving liquid :causes it 'toA frise higherzaroundthelsides of said drumll.

and to be lower in thecenter asfshownf'byj .flines 29 and 30. rIfhisforcesithe vpartof the '"mixtureiwhich i'smost thoroughly mixed to e' i atively supported at its bottom end by a thrust Y bearing 14 Whichy is attached to any substanbya plurality ofl means 18. Around the up-A per Vportion of said shaft 13 and rigidl-yposi'- tioned thereon Within. and above said neck 7 IA provide a spiral conveyor19.- Said conv-v ishaft 13 ata point Within said drum 1 I provide a plurality of agitating paddles 20. v For the purposeof driving said shaftv13, I provide ringY gear'23 which is rigidly positoned upon saidshaft 13 at a point beneath V`said bottom 3 ofjsaid'druml. Y Meshingfvvith 'said ring gear23 is pinion24; upon drive shaft 'Q jsaid drive 2 5 to be'connectedto aseat of power, vnot shown, bv any usual means.

"Said drive shaft 25' has a bearing 26 and a- Supportingineinber 27 whichV houses another 'bea-ring, not sho'ivn.' Said'nieinber. :.is @rigidly attached@ saidiaseifby ati-@Chf operati on,.the power'is'L aiipliedfto i'e-y volve said Vshaft 2 5 'which through the agency screen extending in 'aj,horizonta l manner of .said pinion- 24 and Vsaid ring gear V23 re- "so jvolves said shaftill; 'Saidl'conveyofr 19 feeds.l

dry cementfrom saidbinj intosaiddrum 1.

Y Y, '@JWater 'providedby sai d pipe*9 andf'theA Vv ..fyvater' and the dry'cement'are agitated and i.mixed said paddlesQO'f j The'v'aterkenterin-g by lsaid'perforatio'ns 9*? strikesl directly uponthe topvk ofthe'revolvingmass.

When said Vcement and Water are mixed the volving causeszthe WholeV mixture to `revo,l've

Y 22. -Thej mixedl cement is then :taken: `from w fOhvi'oulv, the invention is4 susceptible V,of

embodiment iiiv` forms other than Ithat j Which isv illustrated in the accompanying dravvingsl an d'd'e'scribedfherein@fand applicable for uses falend purposesv other than "as detailed, and I 55E s and the 'purposes' .de-

A fscribedj "embodying, a cementmixer having 1*-5 'la Afunnel shaped bin disposed upon its top,

veyor 19is vofthe correct size ofradiustd practically close said neck 7, but not totouch the sidesthereof. Securely'attachedto said therefore' consider asmy own'y all lsuch modi-v iicat'io'ns andiadaptations andother usesof Y vHaving .thusv described my inventionwhat a vertical shaft lextending through said mixer and through the neck of said bin, vmeans for rotating said shaft, meanswithin said neck and upon saidshaft for automaticallycon-VV trolling theffeed of dry vcement into said 'mixer'. from said bin, means forprojectingV Water intosaid mixer, means foragitatiiigV Tand mixing lsaid Water .and'said cement and` Vcentrifugally forcing ,the-mixture from ,said mixer' through an overflow! pipe to a c"eiiieiit' -V pan.

f 2. mixerasf described-for mixing V'dry cement and Water, embodying, a'ecylindrical f drum having Va funnel shaped bin disposed upon itsvtop for holding saidy dry cement,

meansforiprojectingowaterinto' said drum,.. 2 a'vertical shaftth-rough .said drum adapted to ,be driven by gea rs, means uponjsaid shaft fan overflow pipe to'acement an.

- cement and Watergf embodying, :a cylindrical 'for automatically' controlling the feed of said Y ldry cementinto said drum, meansv uponV said "l shaft lvvithin's'aiddrum for mixing-said ceu 'nient and water-and forfcentrifugally forcing .f

vdrum having a funnel shapedbin-'disposed iiponitstop for holding said dry *cemen t,f'a 1 'across theupperpoijtion of saidjbinfor screening said cement, -means for projecting `Water into saiddrum, a vertical shaft through said drum vadapted tofjbe driven by gears,

means upon said shaft forautomatically co'n-v drum for mixing said cement and Water and forcentrifug'ally forcing the mixture thereto; a cement4 pan.

1 4. Ai-device', as.'vdes'cribed, vemhody-ingfa cylindrical* metal 'drumV having `Vflat Viends, a

` of, from sai'ddriun through an'overflovv pipe funnel shaped'fbin mountedfupon theuppei,V Y

end o`f="'saiddruinvvith its neck protruding through said upper end adjacentits center, fa screen across the upper portion of said Vbin ,for 'screening drycement, a verticalshaft extending through the bottomjof saiddrum l 'and upward through the neck of said bin, gear'means'gfor; rotating safidshaft, a' spiral?? Vconveyor upoii'said shaft and Within and 'ad-y jacentto .saidneck forautoma'ticallyfcon- 1 trollingthe feedingjof said ydrycem'ent into 'said drum, a'vvater pipe entering one sideof saiddrum adjacent its-'top for admitting-f# Water to said drum, an overdlow pipethroutp the upper Lportion of oneside offsaid drum Vleading-to a cement' pan, a pluralityof agitating paddles upon said shaft and WithinV said drum for agitating andj mixing said 'cement' f' and said Water-and for centrifugally forcing l the mixture from saidfdrum through said over-flow pipefleading to "said pan, all sub.

stantially as and for the purposes stated.l

5. Adevicepas described, in 'coinbiiiatiomL` a cylindrical metal drum having lat ends, a funnel shaped bin mounted upon the upper end of said drum With its neck protruding through said upper end adjacent its center, a screen across the upper portion of said bin for screening dry cement, a vertical shaft extending through the bottom of said drum and upward through the neck of said bin, gear means for rotating said shaft, a spiral conveyor upon said shaft and Within and adjacent to said neck for automatically controlling the feeding of said dry cementinto said drum, a Water pipe entering one side of said drum adjacent its top for admitting Water to said drum, an over-flow pipe through the upper portion of one side of said druin leading to a cement pan, a plurality of agitating paddles upon said shaft and within said Ydrum for agitating and mixing said cement and said Water and for centrifugally forcing the mixture from said drum through said over-flow pipe leading to a desired receptacle,

all substantiallyas and for the purposes stated.

`6. In a device as described the combination With a hollow metal mixing drum having a funnel shaped bin disposed upon its top and a Water pipe entering said drum adjacent the top of its side, of a vertical shaft extending through said drum and through and above the neck of said bin, and adapted to be rotated by gears, a spiral conveyor Within said neck and upon said shaft for automatically controlling the feed of dryy cement from said bin into said drum, a plurality ofv paddles upon said shaft for mixingV said Water and said cement and for centrifugally forcing the mixture thereof out of said drum through an over-How pipe to a cement pan.

7. In a device as described, the combination With a hollow metal mixing drum having a funnel shaped bin disposed upon its top for containing dry cement and a Water pipe entering said drum adjacent the top of its side, and having a vertical shaft extending through said drum and through and bin into` said drum. 4

JOHN E. TROUTH.` 

